The 5SV5344-6: The 40 A rated current and 30 mA sensitivity define its role: it protects against earth faults in circuits up to 40 A, tripping when leakage exceeds 30 mA — the standard threshold for personal protection against direct contact. The 4-pole design switches all four conductors (3 phases + neutral) simultaneously, so it's suited for three-phase final circuits or sub-mains where neutral protection is required. The instantaneous design (no short-time delay) means it responds immediately to a fault, which is the standard for personal protection; delayed types are used for selectivity with downstream devices.
Installation depth is 70 mm, matching the standard SENTRON RCCB/MCB footprint. Mounting position is unrestricted — horizontal, vertical, or flat — which simplifies layout in crowded enclosures. No supplementary devices (like auxiliary switches or shunt trips) can be added to this unit — it's a standalone RCCB. The silicon-free construction is relevant for applications where silicone outgassing could contaminate contacts or optics — common in automotive paint lines or clean-room environments.